﻿using System;

namespace 形参和实参
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
            name name = new name(10, 20);
           
        }

       
    }
    class name
    {
        public  name(int x, int y)
        {
           int c= x + y;
            Console.WriteLine(  c);
        }
    }
}
